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#1
10-01-12, 11:05
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The ability of low grade steel to be hardened is related to its carbon content. Rolling it in carbon powder and reheating will case harden it. To harden throughout followed by tempering requires a steel with a higher carbon content than mild.
It will depend on what you make your snaps out of. I make mine from EN24T and do not harden further. All my rivetting is done hot and this works fine.
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Adrian Barrell 
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#2
10-01-12, 11:34
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Adrian
How would the EN24T compare to 4140 or 4340. Personally,I wouldnt waste time making one from mild steel.
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions....
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#3
10-01-12, 11:46
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EN24T and 4340 are both chromium nickel molybdenum, 4140 being closer to EN19.
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Adrian Barrell
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#4
10-01-12, 12:36
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can it still be turned without special tools on the lathe ?
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is mos redintegro __5th Div___46th Div__ 1942 Ford Universal Carrier No.3 MkI* Lower Hull No. 10131 War Department CT54508 (SOLD) 1944 Ford Universal Carrier MkII* (under restoration). 1944 Morris C8 radio body (under restoration).
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#5
10-01-12, 12:39
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Are you using HSS or carbide tips? Tipped tools have no problems, HSS is ok if you keep an eye on your speeds and feeds.
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Adrian Barrell
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#6
10-01-12, 12:45
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no idea not my lathe...will ask the lad Adrian... cheers
__________________
is mos redintegro __5th Div___46th Div__ 1942 Ford Universal Carrier No.3 MkI* Lower Hull No. 10131 War Department CT54508 (SOLD) 1944 Ford Universal Carrier MkII* (under restoration). 1944 Morris C8 radio body (under restoration).
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#7
11-01-12, 06:56
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Richard / Adrian
To pose the question a little differently, Are the cutting tips on the tools separate, as in clamped into the holder (Not the tool post holder) Commonly a triangle shape, that can be turned over, and around to give six cutting edges?
Thanks Adrian for your conversion.
__________________
Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions....
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